\section{\class{wxCheckBox}}\label{wxcheckbox}
A checkbox is a labelled box which by default is either on (checkmark is
-visible) or off (no checkmark). Optionally (When the wxCHK\_3STATE style flag
+visible) or off (no checkmark). Optionally (when the wxCHK\_3STATE style flag
is set) it can have a third state, called the mixed or undetermined state.
Often this is used as a "Does Not Apply" state.
\twocolwidtha{7cm}
\begin{twocollist}\itemsep=0pt
-\twocolitem{\windowstyle{wxCHK\_2STATE}}{Create a 2-state checkbox (This is the default).}
-\twocolitem{\windowstyle{wxCHK\_3STATE}}{Create a 3-state checkbox.}
+\twocolitem{\windowstyle{wxCHK\_2STATE}}{Create a 2-state checkbox. This is the default.}
+\twocolitem{\windowstyle{wxCHK\_3STATE}}{Create a 3-state checkbox.
+Not implemented in wxMGL, wxOS2 and wxGTK built against GTK+ 1.2.}
\twocolitem{\windowstyle{wxCHK\_ALLOW\_3RD\_STATE\_FOR\_USER}}{By default a user can't set a 3-state checkbox
to the third state. It can only be done from code. Using this flags allows the user to set the checkbox to the third state by clicking. }
\twocolitem{\windowstyle{wxALIGN\_RIGHT}}{Makes the text appear on the left of the checkbox.}